APPARATUS FOR MEASURING AN IMPEDANCE OF FUEL CELL AND METHOD OF MEASURING AN IMPEDANCE OF FUEL CELL

APPARATUS FOR MEASURING AN IMPEDANCE OF FUEL CELL AND METHOD OF MEASURING AN IMPEDANCE OF FUEL CELL

This impedance measurement device for a fuel cell outputs an AC current to a fuel cell and adjusts the frequency of the AC current output to the fuel cell such that the impedance between the fuel cell and a load device is higher than the impedance between a secondary battery and the load device. Fur...

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Hauptverfasser: MATSUMOTO, MICHIHIKO, KANEKO, YOHEI, AKASHI, KOTARO, SATO, MASASHI
Format: Patent
Sprache:eng ; fre
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
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creator MATSUMOTO, MICHIHIKO
KANEKO, YOHEI
AKASHI, KOTARO
SATO, MASASHI
description This impedance measurement device for a fuel cell outputs an AC current to a fuel cell and adjusts the frequency of the AC current output to the fuel cell such that the impedance between the fuel cell and a load device is higher than the impedance between a secondary battery and the load device. Furthermore, the impedance measurement device adjusts the AC current such that a positive electrode-side AC potential difference, which is the difference between the potential on the positive electrode side of the fuel cell and an intermediate potential, matches a negative electrode-side AC potential difference, which is the difference between the potential on the negative electrode side of the fuel cell and the intermediate potential, and calculates the impedance of the fuel cell on the basis of the positive electrode-side AC potential difference and/or the negative electrode-side AC potential difference, and of the adjusted AC current.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
title APPARATUS FOR MEASURING AN IMPEDANCE OF FUEL CELL AND METHOD OF MEASURING AN IMPEDANCE OF FUEL CELL
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